CodeIgniter URLs F1 F1 F1 F1 plz:not solved yet

[eluser]nirbhab[/eluser]
sorry i was not able to make my point enough clear, but i think u r heading towards the right direction.

currently i am using first configuration:
i.e.
$config['url_suffix'] = '';
so URL must wrk like following
http://cdcg.in/mvc/index.php/blog

following file is present in
[system/application/controllers]
<?php
class Blog extends Controller {

function index()
{
echo 'Hello World!';
}
}
?>